our nbc chopper above the scene in daly city. here's a look at the map to show you where this all happened. a mud slide caused by a water main break which dumped about 45,000 gallons of water into this neighborhood. it turned into a muddy mess. the question now, what about the other aging pipes along the peninsula. let's bring in kris sanchez who joins us in daly city. good evening, kris. >> reporter: hi there, raj. it was about this dark this morning when the mud started flowing down this street in this daly city neighborhood so residents really didn't know what they were going to see once the sun rose, but what a sight it was, they woke up after an 8-inch city water main break broke sending a torrent of 40,000 plus gallons of water down the hillside. it picked up mud, it picked up debris and it picked up steam along the way. residents said it sounded like a storm but when they looked out the window, it was too dark to know what it was. then came the knocks at doors, warning people to get out. >> i saw the police out here and ab